Degradation of oxalic acid from aqueous solutions by ozonation in presence of Ni/Al2O3 catalysts

被引：49

作者：

Avramescu, Sorin Marius ^{[1
]}

Bradu, Corina ^{[1
]}

Udrea, Ion ^{[1
]}

Mihalache, Nicoleta ^{[1
]}

Ruta, Florin ^{[1
]}

机构：

[1] Univ Bucharest, Fac Chem, Dept Organ Chem, Bucharest, Romania

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 14期

关键词：

catalytic ozonation; oxalic acid; nickel oxide; kinetic; reaction mechanism;

D O I：

10.1016/j.catcom.2008.06.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ozonation of oxalic acid has been carried out in an agitated slurry semi-batch reactor using NiO/Al2O3 as catalysts. The presence of catalysts in the ozonation processes significantly improves the oxalic acid removal rate, in comparison to the catalytic process. The influence of calcination temperature on the catalyst activity and on leaching of the active component was assessed. At the experimental conditions applied, the catalytic process develops under complete mineralization of organic substrate. The proposed mechanism justifies the first order kinetic experimental for oxalic acid and ozone. This kinetics also complies with experimental results obtained for different temperatures, ozone partial pressure and different mass of catalyst per slurry volume. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2386 / 2391

页数：6

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